2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3 * Copyright (c) 1992-1998 Søren Schmidt
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer as
11 * the first lines of this file unmodified.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * $FreeBSD: src/sys/dev/fb/vga.c,v 1.9.2.1 2001/08/11 02:58:44 yokota Exp $
30 * $DragonFly: src/sys/dev/video/fb/vga.c,v 1.20 2006/12/29 00:10:35 swildner Exp $
35 #include "opt_syscons.h" /* should be removed in the future, XXX */
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
41 #include <sys/fcntl.h>
42 #include <sys/malloc.h>
44 #include <sys/thread2.h>
47 #include <vm/vm_param.h>
50 #include <machine/md_var.h>
51 #include <machine/pc/bios.h>
56 #include <bus/isa/isareg.h>
63 vga_probe_unit(int unit, video_adapter_t *buf, int flags)
69 sw = vid_get_switch(VGA_DRIVER_NAME);
72 error = (*sw->probe)(unit, &adp, NULL, flags);
75 bcopy(adp, buf, sizeof(*buf));
80 vga_attach_unit(int unit, vga_softc_t *sc, int flags)
85 sw = vid_get_switch(VGA_DRIVER_NAME);
89 error = (*sw->probe)(unit, &sc->adp, NULL, flags);
92 return (*sw->init)(unit, sc->adp, flags);
95 /* cdev driver functions */
97 #ifdef FB_INSTALL_CDEV
102 vga_open(cdev_t dev, vga_softc_t *sc, int flag, int mode, struct ucred *cred)
106 if (mode & (O_CREAT | O_APPEND | O_TRUNC))
109 return genfbopen(&sc->gensc, sc->adp, flag, mode, cred);
113 vga_close(cdev_t dev, vga_softc_t *sc, int flag, int mode)
115 return genfbclose(&sc->gensc, sc->adp, flag, mode);
119 vga_read(cdev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
121 return genfbread(&sc->gensc, sc->adp, uio, flag);
125 vga_write(cdev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
127 return genfbread(&sc->gensc, sc->adp, uio, flag);
131 vga_ioctl(cdev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag,
134 return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, cred);
138 vga_mmap(cdev_t dev, vga_softc_t *sc, vm_offset_t offset, int prot)
140 return genfbmmap(&sc->gensc, sc->adp, offset, prot);
143 #endif /* FB_INSTALL_CDEV */
147 #include <machine/clock.h>
148 #include <machine/pc/vesa.h>
150 #define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED)
151 #define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED)
152 #define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED)
154 /* for compatibility with old kernel options */
155 #ifdef SC_ALT_SEQACCESS
156 #undef SC_ALT_SEQACCESS
157 #undef VGA_ALT_SEQACCESS
158 #define VGA_ALT_SEQACCESS 1
163 #undef VGA_SLOW_IOACCESS
164 #define VGA_SLOW_IOACCESS 1
167 /* this should really be in `rtc.h' */
168 #define RTC_EQUIPMENT 0x14
171 #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1)
172 #define V_MODE_PARAM_SIZE 64
174 /* video adapter state buffer */
177 #define V_STATE_SIG 0x736f6962
178 u_char regs[V_MODE_PARAM_SIZE];
180 typedef struct adp_state adp_state_t;
182 /* video adapter information */
186 #define DCC_EGAMONO 3
191 * NOTE: `va_window' should have a virtual address, but is initialized
192 * with a physical address in the following table, as verify_adapter()
193 * will perform address conversion at run-time.
195 static video_adapter_t adapter_init_value[] = {
197 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC,
198 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
201 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
202 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
205 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
206 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
209 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC,
210 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
213 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
214 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
217 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
218 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
222 static video_adapter_t biosadapter[2];
223 static int biosadapters = 0;
225 /* video driver declarations */
226 static int vga_configure(int flags);
227 int (*vga_sub_configure)(int flags);
229 static int vga_nop(void);
231 static int vga_error(void);
232 static vi_probe_t vga_probe;
233 static vi_init_t vga_init;
234 static vi_get_info_t vga_get_info;
235 static vi_query_mode_t vga_query_mode;
236 static vi_set_mode_t vga_set_mode;
237 static vi_save_font_t vga_save_font;
238 static vi_load_font_t vga_load_font;
239 static vi_show_font_t vga_show_font;
240 static vi_save_palette_t vga_save_palette;
241 static vi_load_palette_t vga_load_palette;
242 static vi_set_border_t vga_set_border;
243 static vi_save_state_t vga_save_state;
244 static vi_load_state_t vga_load_state;
245 static vi_set_win_org_t vga_set_origin;
246 static vi_read_hw_cursor_t vga_read_hw_cursor;
247 static vi_set_hw_cursor_t vga_set_hw_cursor;
248 static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape;
249 static vi_blank_display_t vga_blank_display;
250 static vi_mmap_t vga_mmap_buf;
251 static vi_ioctl_t vga_dev_ioctl;
252 #ifndef VGA_NO_MODE_CHANGE
253 static vi_clear_t vga_clear;
254 static vi_fill_rect_t vga_fill_rect;
255 static vi_bitblt_t vga_bitblt;
256 #else /* VGA_NO_MODE_CHANGE */
257 #define vga_clear (vi_clear_t *)vga_error
258 #define vga_fill_rect (vi_fill_rect_t *)vga_error
259 #define vga_bitblt (vi_bitblt_t *)vga_error
261 static vi_diag_t vga_diag;
263 static video_switch_t vgavidsw = {
280 vga_set_hw_cursor_shape,
292 VIDEO_DRIVER(mda, vgavidsw, NULL);
293 VIDEO_DRIVER(cga, vgavidsw, NULL);
294 VIDEO_DRIVER(ega, vgavidsw, NULL);
295 VIDEO_DRIVER(vga, vgavidsw, vga_configure);
297 /* VGA BIOS standard video modes */
301 static video_info_t bios_vmode[] = {
303 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1,
304 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
305 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1,
306 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
307 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1,
308 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
309 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1,
310 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
312 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1,
313 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
314 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1,
315 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
316 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1,
317 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
318 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1,
319 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
321 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1,
322 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
323 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1,
324 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
325 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
326 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
328 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1,
329 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
331 { M_ENH_B80x43, 0, 80, 43, 8, 8, 2, 1,
332 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
333 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1,
334 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
336 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1,
337 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
338 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
339 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
340 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1,
341 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
342 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1,
343 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
344 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1,
345 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
346 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1,
347 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
349 #ifndef VGA_NO_MODE_CHANGE
352 { M_VGA_M90x25, 0, 90, 25, 8, 16, 2, 1,
353 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
354 { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1,
355 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
356 { M_VGA_M90x30, 0, 90, 30, 8, 16, 2, 1,
357 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
358 { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1,
359 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
360 { M_VGA_M90x43, 0, 90, 43, 8, 8, 2, 1,
361 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
362 { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8, 8, 4, 1,
363 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
364 { M_VGA_M90x50, 0, 90, 50, 8, 8, 2, 1,
365 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
366 { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8, 8, 4, 1,
367 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
368 { M_VGA_M90x60, 0, 90, 60, 8, 8, 2, 1,
369 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
370 { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8, 8, 4, 1,
371 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
372 #endif /* VGA_WIDTH90 */
375 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
376 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
377 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
378 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
379 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1,
380 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
382 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4,
383 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
385 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4,
386 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
388 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
389 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 ,
391 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
392 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
394 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2,
395 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
397 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
398 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
401 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
402 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
404 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
405 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
407 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1,
408 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
409 V_INFO_MM_PACKED, 1 },
410 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 4,
411 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
413 #endif /* VGA_NO_MODE_CHANGE */
418 static int vga_init_done = FALSE;
419 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
420 static u_char *video_mode_ptr = NULL; /* EGA/VGA */
421 static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */
423 static u_char *mode_map[V_MODE_MAP_SIZE];
424 static adp_state_t adpstate;
425 static adp_state_t adpstate2;
426 static int rows_offset = 1;
428 /* local macros and functions */
429 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
431 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
432 static void map_mode_table(u_char **, u_char *, int);
434 static void clear_mode_map(video_adapter_t *, u_char **, int, int);
435 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
436 static int map_mode_num(int);
438 static int map_bios_mode_num(int, int, int);
439 static u_char *get_mode_param(int);
441 static void fill_adapter_param(int, video_adapter_t *);
443 static int verify_adapter(video_adapter_t *);
444 static void update_adapter_info(video_adapter_t *, video_info_t *);
445 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
446 #define COMP_IDENTICAL 0
447 #define COMP_SIMILAR 1
448 #define COMP_DIFFERENT 2
449 static int comp_adpregs(u_char *, u_char *);
451 static int probe_adapters(void);
452 static int set_line_length(video_adapter_t *, int);
453 static int set_display_start(video_adapter_t *, int, int);
455 #ifndef VGA_NO_MODE_CHANGE
457 static void set_width90(adp_state_t *);
459 #endif /* !VGA_NO_MODE_CHANGE */
461 #ifndef VGA_NO_FONT_LOADING
462 #define PARAM_BUFSIZE 6
463 static void set_font_mode(video_adapter_t *, u_char *);
464 static void set_normal_mode(video_adapter_t *, u_char *);
467 #ifndef VGA_NO_MODE_CHANGE
468 static void filll_io(int, vm_offset_t, size_t);
469 static void planar_fill(video_adapter_t *, int);
470 static void packed_fill(video_adapter_t *, int);
471 static void direct_fill(video_adapter_t *, int);
473 static void planar_fill_rect(video_adapter_t *, int, int, int, int, int);
474 static void packed_fill_rect(video_adapter_t *, int, int, int, int, int);
475 static void direct_fill_rect16(video_adapter_t *, int, int, int, int, int);
476 static void direct_fill_rect24(video_adapter_t *, int, int, int, int, int);
477 static void direct_fill_rect32(video_adapter_t *, int, int, int, int, int);
479 #endif /* !VGA_NO_MODE_CHANGE */
481 static void dump_buffer(u_char *, size_t);
483 #define ISMAPPED(pa, width) \
484 (((pa) <= (u_long)0x1000 - (width)) \
485 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
487 #define prologue(adp, flag, err) \
488 if (!vga_init_done || !((adp)->va_flags & (flag))) \
491 /* a backdoor for the console driver */
493 vga_configure(int flags)
498 for (i = 0; i < biosadapters; ++i) {
499 if (!probe_done(&biosadapter[i]))
501 biosadapter[i].va_flags |= V_ADP_INITIALIZED;
502 if (!config_done(&biosadapter[i])) {
503 if (vid_register(&biosadapter[i]) < 0)
505 biosadapter[i].va_flags |= V_ADP_REGISTERED;
508 if (vga_sub_configure != NULL)
509 (*vga_sub_configure)(flags);
514 /* local subroutines */
516 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
517 /* construct the mode parameter map */
519 map_mode_table(u_char *map[], u_char *table, int max)
523 for(i = 0; i < max; ++i)
524 map[i] = table + i*V_MODE_PARAM_SIZE;
525 for(; i < V_MODE_MAP_SIZE; ++i)
528 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
531 clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color)
537 * NOTE: we don't touch `bios_vmode[]' because it is shared
540 for(i = 0; i < max; ++i) {
541 if (vga_get_info(adp, i, &info))
543 if ((info.vi_flags & V_INFO_COLOR) != color)
548 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
549 /* map the non-standard video mode to a known mode number */
551 map_mode_num(int mode)
557 { M_ENH_B80x43, M_ENH_B80x25 },
558 { M_ENH_C80x43, M_ENH_C80x25 },
559 { M_VGA_M80x30, M_VGA_M80x25 },
560 { M_VGA_C80x30, M_VGA_C80x25 },
561 { M_VGA_M80x50, M_VGA_M80x25 },
562 { M_VGA_C80x50, M_VGA_C80x25 },
563 { M_VGA_M80x60, M_VGA_M80x25 },
564 { M_VGA_C80x60, M_VGA_C80x25 },
566 { M_VGA_M90x25, M_VGA_M80x25 },
567 { M_VGA_C90x25, M_VGA_C80x25 },
568 { M_VGA_M90x30, M_VGA_M80x25 },
569 { M_VGA_C90x30, M_VGA_C80x25 },
570 { M_VGA_M90x43, M_ENH_B80x25 },
571 { M_VGA_C90x43, M_ENH_C80x25 },
572 { M_VGA_M90x50, M_VGA_M80x25 },
573 { M_VGA_C90x50, M_VGA_C80x25 },
574 { M_VGA_M90x60, M_VGA_M80x25 },
575 { M_VGA_C90x60, M_VGA_C80x25 },
577 { M_VGA_MODEX, M_VGA_CG320 },
581 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
582 if (mode_map[i].from == mode)
583 return mode_map[i].to;
587 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
589 /* turn the BIOS video number into our video mode number */
591 map_bios_mode_num(int type, int color, int bios_mode)
593 static int cga_modes[7] = {
594 M_B40x25, M_C40x25, /* 0, 1 */
595 M_B80x25, M_C80x25, /* 2, 3 */
599 static int ega_modes[17] = {
600 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */
601 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */
604 M_EGAMONO80x25, /* 7 */
608 M_ENHMONOAPA2, /* XXX: video momery > 64K */
609 M_ENH_CG640, /* XXX: video momery > 64K */
611 static int vga_modes[20] = {
612 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
613 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
616 M_VGA_M80x25, /* 7 */
622 M_BG640x480, M_CG640x480,
629 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0]))
630 return vga_modes[bios_mode];
638 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0]))
639 return ega_modes[bios_mode];
643 return M_EGAMONO80x25;
647 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0]))
648 return cga_modes[bios_mode];
655 return M_EGAMONO80x25; /* XXX: this name is confusing */
663 /* look up a parameter table entry */
665 get_mode_param(int mode)
667 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
668 if (mode >= V_MODE_MAP_SIZE)
669 mode = map_mode_num(mode);
671 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
672 return mode_map[mode];
679 fill_adapter_param(int code, video_adapter_t *adp)
685 { DCC_MONO, DCC_EGA40 /* CGA monitor */ },
686 { DCC_MONO, DCC_EGA80 /* CGA monitor */ },
687 { DCC_MONO, DCC_EGA80 },
688 { DCC_MONO, DCC_EGA80 },
689 { DCC_CGA40, DCC_EGAMONO },
690 { DCC_CGA80, DCC_EGAMONO },
691 { DCC_EGA40 /* CGA monitor */, DCC_MONO},
692 { DCC_EGA80 /* CGA monitor */, DCC_MONO},
693 { DCC_EGA80, DCC_MONO },
694 { DCC_EGA80, DCC_MONO },
695 { DCC_EGAMONO, DCC_CGA40 },
696 { DCC_EGAMONO, DCC_CGA80 },
699 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) {
700 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
701 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
703 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary];
704 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary];
707 #endif /* VGA_NO_BIOS */
710 verify_adapter(video_adapter_t *adp)
714 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
718 buf = BIOS_PADDRTOVADDR(adp->va_window);
721 if (readw(buf) != 0xA55A)
725 switch (adp->va_type) {
728 outb(adp->va_crtc_addr, 7);
729 if (inb(adp->va_crtc_addr) == 7) {
730 adp->va_type = KD_VGA;
731 adp->va_name = "vga";
732 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
734 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER;
735 /* the color adapter may be in the 40x25 mode... XXX */
737 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
738 /* get the BIOS video mode pointer */
739 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
740 p = BIOS_SADDRTOLADDR(p);
741 if (ISMAPPED(p, sizeof(u_int32_t))) {
742 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
743 p = BIOS_SADDRTOLADDR(p);
744 if (ISMAPPED(p, V_MODE_PARAM_SIZE))
745 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
751 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
752 /* may be in the 40x25 mode... XXX */
753 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
754 /* get the BIOS video mode pointer */
755 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
756 p = BIOS_SADDRTOLADDR(p);
757 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
762 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
763 /* get the BIOS video mode pointer */
764 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
765 p = BIOS_SADDRTOLADDR(p);
766 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
775 update_adapter_info(video_adapter_t *adp, video_info_t *info)
777 adp->va_flags &= ~V_ADP_COLOR;
779 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
781 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
782 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
783 adp->va_window_size = info->vi_window_size;
784 adp->va_window_gran = info->vi_window_gran;
785 adp->va_window_orig = 0;
787 adp->va_buffer = info->vi_buffer;
788 adp->va_buffer_size = info->vi_buffer_size;
789 if (info->vi_mem_model == V_INFO_MM_VGAX) {
790 adp->va_line_width = info->vi_width/2;
791 } else if (info->vi_flags & V_INFO_GRAPHICS) {
792 switch (info->vi_depth/info->vi_planes) {
794 adp->va_line_width = info->vi_width/8;
797 adp->va_line_width = info->vi_width/4;
800 adp->va_line_width = info->vi_width/2;
803 default: /* shouldn't happen */
804 adp->va_line_width = info->vi_width;
808 adp->va_line_width = info->vi_width;
810 adp->va_disp_start.x = 0;
811 adp->va_disp_start.y = 0;
812 bcopy(info, &adp->va_info, sizeof(adp->va_info));
815 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
816 /* compare two parameter table entries */
818 comp_adpregs(u_char *buf1, u_char *buf2)
822 } params[V_MODE_PARAM_SIZE] = {
823 {0xff}, {0x00}, {0xff}, /* COLS}, ROWS}, POINTS */
824 {0x00}, {0x00}, /* page length */
825 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */
826 {0xf3}, /* misc register */
827 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */
828 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff},
829 {0x00}, {0x00}, {0x00}, {0x00}, {0x00},
830 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff},
831 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff},
832 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */
833 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
834 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
835 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0},
836 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */
837 {0xff}, {0xff}, {0xff}, {0xff},
839 int identical = TRUE;
842 if ((buf1 == NULL) || (buf2 == NULL))
843 return COMP_DIFFERENT;
845 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
846 if (params[i].mask == 0) /* don't care */
848 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
849 return COMP_DIFFERENT;
850 if (buf1[i] != buf2[i])
853 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
855 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
857 /* probe video adapters and return the number of detected adapters */
861 video_adapter_t *adp;
863 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
868 /* do this test only once */
871 vga_init_done = TRUE;
874 * Locate display adapters.
875 * The AT architecture supports upto two adapters. `syscons' allows
876 * the following combinations of adapters:
878 * 2) MDA + EGA/VGA color
879 * 3) CGA + EGA/VGA mono
880 * Note that `syscons' doesn't bother with MCGA as it is only
881 * avaiable for low end PS/2 models which has 80286 or earlier CPUs,
882 * thus, they are not running FreeBSD!
883 * When there are two adapaters in the system, one becomes `primary'
884 * and the other `secondary'. The EGA adapter has a set of DIP
885 * switches on board for this information and the EGA BIOS copies
886 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88).
887 * The VGA BIOS has more sophisticated mechanism and has this
888 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains
889 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH.
893 * Check rtc and BIOS data area.
894 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead
895 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are
896 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets
897 * these bits in BIOSDATA_EQUIPMENT according to the monitor
901 if (*(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8)) {
902 /* EGA/VGA BIOS is present */
903 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
906 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */
908 /* EGA/VGA: shouldn't be happening */
909 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
914 /* FIXME: switch to the 80x25 mode? XXX */
915 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
916 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
920 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
921 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
925 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
926 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
931 /* assume EGA/VGA? XXX */
932 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80];
933 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
934 #endif /* VGA_NO_BIOS */
937 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) {
939 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED;
940 biosadapter[V_ADP_SECONDARY].va_mode =
941 biosadapter[V_ADP_SECONDARY].va_initial_mode =
942 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type,
943 biosadapter[V_ADP_SECONDARY].va_flags
945 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode);
947 biosadapter[V_ADP_SECONDARY].va_type = -1;
949 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) {
951 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED;
953 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode =
954 readb(BIOS_PADDRTOVADDR(0x449));
956 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */
958 biosadapter[V_ADP_PRIMARY].va_mode =
959 biosadapter[V_ADP_PRIMARY].va_initial_mode =
960 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type,
961 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
962 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode);
964 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY];
965 biosadapter[V_ADP_SECONDARY].va_type = -1;
967 if (biosadapters == 0)
969 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY;
970 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY;
972 #if 0 /* we don't need these... */
973 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...);
974 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...);
979 * We cannot have two video adapter of the same type; there must be
980 * only one of color or mono adapter, or one each of them.
982 if (biosadapters > 1) {
983 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags)
985 /* we have two mono or color adapters!! */
986 return (biosadapters = 0);
991 * Ensure a zero start address. This is mainly to recover after
992 * switching from pcvt using userconfig(). The registers are w/o
993 * for old hardware so it's too hard to relocate the active screen
995 * This must be done before vga_save_state() for VGA.
997 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12);
998 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
999 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13);
1000 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1002 /* the video mode parameter table in EGA/VGA BIOS */
1003 /* NOTE: there can be only one EGA/VGA, wheather color or mono,
1004 * recognized by the video BIOS.
1006 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
1007 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
1008 adp = &biosadapter[V_ADP_PRIMARY];
1009 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
1010 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
1011 adp = &biosadapter[V_ADP_SECONDARY];
1015 bzero(mode_map, sizeof(mode_map));
1017 if (adp->va_type == KD_VGA) {
1018 vga_save_state(adp, &adpstate, sizeof(adpstate));
1019 for(i = 0; i < 16; i++)
1020 adp->va_palette_regs[i] = adpstate.regs[35 + i];
1021 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1022 mode_map[adp->va_initial_mode] = adpstate.regs;
1024 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1025 if (video_mode_ptr == NULL) {
1026 mode_map[adp->va_initial_mode] = adpstate.regs;
1029 /* discard the table if we are not familiar with it... */
1030 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
1031 mp = get_mode_param(adp->va_initial_mode);
1033 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
1034 switch (comp_adpregs(adpstate.regs, mp)) {
1035 case COMP_IDENTICAL:
1037 * OK, this parameter table looks reasonably familiar
1041 * This is a kludge for Toshiba DynaBook SS433
1042 * whose BIOS video mode table entry has the actual #
1043 * of rows at the offset 1; BIOSes from other
1044 * manufacturers store the # of rows - 1 there. XXX
1046 rows_offset = adpstate.regs[1] + 1 - mp[1];
1051 * Not exactly the same, but similar enough to be
1052 * trusted. However, use the saved register values
1053 * for the initial mode and other modes which are
1054 * based on the initial mode.
1056 mode_map[adp->va_initial_mode] = adpstate.regs;
1057 rows_offset = adpstate.regs[1] + 1 - mp[1];
1058 adpstate.regs[1] -= rows_offset - 1;
1061 case COMP_DIFFERENT:
1064 * Don't use the paramter table in BIOS. It doesn't
1065 * look familiar to us. Video mode switching is allowed
1066 * only if the new mode is the same as or based on
1069 video_mode_ptr = NULL;
1070 bzero(mode_map, sizeof(mode_map));
1071 mode_map[adp->va_initial_mode] = adpstate.regs;
1076 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1078 #ifndef VGA_NO_MODE_CHANGE
1079 adp->va_flags |= V_ADP_MODECHANGE;
1081 #ifndef VGA_NO_FONT_LOADING
1082 adp->va_flags |= V_ADP_FONT;
1084 } else if (adp->va_type == KD_EGA) {
1085 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1087 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1088 if (video_mode_ptr == NULL) {
1091 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1);
1092 /* XXX how can one validate the EGA table... */
1093 mp = get_mode_param(adp->va_initial_mode);
1095 adp->va_flags |= V_ADP_MODECHANGE;
1096 #ifndef VGA_NO_FONT_LOADING
1097 adp->va_flags |= V_ADP_FONT;
1102 * This is serious. We will not be able to switch video
1105 video_mode_ptr = NULL;
1106 bzero(mode_map, sizeof(mode_map));
1110 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1114 /* remove conflicting modes if we have more than one adapter */
1115 if (biosadapters > 0) {
1116 for (i = 0; i < biosadapters; ++i) {
1117 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE))
1119 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1,
1120 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1122 if ((biosadapter[i].va_type == KD_VGA)
1123 || (biosadapter[i].va_type == KD_EGA)) {
1124 biosadapter[i].va_io_base =
1125 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1127 biosadapter[i].va_io_size = 32;
1132 /* buffer address */
1133 vga_get_info(&biosadapter[V_ADP_PRIMARY],
1134 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info);
1135 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1136 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info);
1138 if (biosadapters > 1) {
1139 vga_get_info(&biosadapter[V_ADP_SECONDARY],
1140 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info);
1141 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1142 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info);
1146 * XXX: we should verify the following values for the primary adapter...
1147 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
1148 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02)
1149 * ? 0 : V_ADP_COLOR;
1150 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
1151 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
1152 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
1153 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
1156 return biosadapters;
1159 /* set the scan line length in pixel */
1161 set_line_length(video_adapter_t *adp, int pixel)
1164 int ppw; /* pixels per word */
1165 int bpl; /* bytes per line */
1168 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1170 mp = get_mode_param(adp->va_mode);
1174 switch (adp->va_info.vi_mem_model) {
1175 case V_INFO_MM_PLANAR:
1176 ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1177 count = (pixel + ppw - 1)/ppw/2;
1178 bpl = ((pixel + ppw - 1)/ppw/2)*4;
1180 case V_INFO_MM_PACKED:
1181 count = (pixel + 7)/8;
1182 bpl = ((pixel + 7)/8)*8;
1184 case V_INFO_MM_TEXT:
1185 count = (pixel + 7)/8; /* columns */
1186 bpl = (pixel + 7)/8; /* columns */
1192 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */
1193 count *= 2; /* byte mode */
1194 outb(adp->va_crtc_addr, 0x13);
1195 outb(adp->va_crtc_addr + 1, count);
1196 adp->va_line_width = bpl;
1202 set_display_start(video_adapter_t *adp, int x, int y)
1204 int off; /* byte offset (graphics mode)/word offset (text mode) */
1205 int poff; /* pixel offset */
1206 int roff; /* row offset */
1207 int ppb; /* pixels per byte */
1209 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1211 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
1212 ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1213 off = y*adp->va_line_width + x/ppb;
1217 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1226 off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
1227 roff = y%adp->va_info.vi_cheight;
1228 /* FIXME: is this correct? XXX */
1236 outb(adp->va_crtc_addr, 0xc); /* high */
1237 outb(adp->va_crtc_addr + 1, off >> 8);
1238 outb(adp->va_crtc_addr, 0xd); /* low */
1239 outb(adp->va_crtc_addr + 1, off & 0xff);
1241 /* horizontal pel pan */
1242 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1243 inb(adp->va_crtc_addr + 6);
1244 outb(ATC, 0x13 | 0x20);
1246 inb(adp->va_crtc_addr + 6);
1250 /* preset raw scan */
1251 outb(adp->va_crtc_addr, 8);
1252 outb(adp->va_crtc_addr + 1, roff);
1254 adp->va_disp_start.x = x;
1255 adp->va_disp_start.y = y;
1259 #ifndef VGA_NO_MODE_CHANGE
1260 #ifdef __i386__ /* XXX */
1262 fill(int val, void *d, size_t size)
1269 #endif /* __i386__ */
1272 filll_io(int val, vm_offset_t d, size_t size)
1274 while (size-- > 0) {
1276 d += sizeof(u_int32_t);
1279 #endif /* !VGA_NO_MODE_CHANGE */
1298 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
1301 if (unit >= biosadapters)
1304 *adpp = &biosadapter[unit];
1310 vga_init(int unit, video_adapter_t *adp, int flags)
1312 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp))
1315 if (!init_done(adp)) {
1316 /* nothing to do really... */
1317 adp->va_flags |= V_ADP_INITIALIZED;
1320 if (!config_done(adp)) {
1321 if (vid_register(adp) < 0)
1323 adp->va_flags |= V_ADP_REGISTERED;
1325 if (vga_sub_configure != NULL)
1326 (*vga_sub_configure)(0);
1333 * Return the video_info structure of the requested video mode.
1338 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
1345 #ifndef VGA_NO_MODE_CHANGE
1346 if (adp->va_flags & V_ADP_MODECHANGE) {
1348 * If the parameter table entry for this mode is not found,
1349 * the mode is not supported...
1351 if (get_mode_param(mode) == NULL)
1354 #endif /* VGA_NO_MODE_CHANGE */
1357 * Even if we don't support video mode switching on this adapter,
1358 * the information on the initial (thus current) video mode
1359 * should be made available.
1361 if (mode != adp->va_initial_mode)
1365 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1366 if (bios_vmode[i].vi_mode == NA)
1368 if (mode == bios_vmode[i].vi_mode) {
1369 *info = bios_vmode[i];
1371 info->vi_buffer_size = info->vi_window_size*info->vi_planes;
1380 * Find a video mode matching the requested parameters.
1381 * Fields filled with 0 are considered "don't care" fields and
1387 vga_query_mode(video_adapter_t *adp, video_info_t *info)
1394 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1395 if (bios_vmode[i].vi_mode == NA)
1398 if ((info->vi_width != 0)
1399 && (info->vi_width != bios_vmode[i].vi_width))
1401 if ((info->vi_height != 0)
1402 && (info->vi_height != bios_vmode[i].vi_height))
1404 if ((info->vi_cwidth != 0)
1405 && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
1407 if ((info->vi_cheight != 0)
1408 && (info->vi_cheight != bios_vmode[i].vi_cheight))
1410 if ((info->vi_depth != 0)
1411 && (info->vi_depth != bios_vmode[i].vi_depth))
1413 if ((info->vi_planes != 0)
1414 && (info->vi_planes != bios_vmode[i].vi_planes))
1416 /* XXX: should check pixel format, memory model */
1417 if ((info->vi_flags != 0)
1418 && (info->vi_flags != bios_vmode[i].vi_flags))
1421 /* verify if this mode is supported on this adapter */
1422 if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
1431 * Change the video mode.
1436 #ifndef VGA_NO_MODE_CHANGE
1439 set_width90(adp_state_t *params)
1442 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
1443 * and alexv@sui.gda.itesm.mx.
1445 params->regs[5] |= 1; /* toggle 8 pixel wide fonts */
1446 params->regs[10+0x0] = 0x6b;
1447 params->regs[10+0x1] = 0x59;
1448 params->regs[10+0x2] = 0x5a;
1449 params->regs[10+0x3] = 0x8e;
1450 params->regs[10+0x4] = 0x5e;
1451 params->regs[10+0x5] = 0x8a;
1452 params->regs[10+0x13] = 45;
1453 params->regs[35+0x13] = 0;
1455 #endif /* VGA_WIDTH90 */
1456 #endif /* !VGA_NO_MODE_CHANGE */
1459 vga_set_mode(video_adapter_t *adp, int mode)
1461 #ifndef VGA_NO_MODE_CHANGE
1465 prologue(adp, V_ADP_MODECHANGE, ENODEV);
1467 if (vga_get_info(adp, mode, &info))
1471 kprintf("vga_set_mode(): setting mode %d\n", mode);
1474 params.sig = V_STATE_SIG;
1475 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
1479 case M_VGA_C90x60: case M_VGA_M90x60:
1480 set_width90(¶ms);
1483 case M_VGA_C80x60: case M_VGA_M80x60:
1484 params.regs[2] = 0x08;
1485 params.regs[19] = 0x47;
1489 case M_VGA_C90x30: case M_VGA_M90x30:
1490 set_width90(¶ms);
1493 case M_VGA_C80x30: case M_VGA_M80x30:
1494 params.regs[19] = 0x4f;
1496 params.regs[9] |= 0xc0;
1497 params.regs[16] = 0x08;
1498 params.regs[17] = 0x3e;
1499 params.regs[26] = 0xea;
1500 params.regs[28] = 0xdf;
1501 params.regs[31] = 0xe7;
1502 params.regs[32] = 0x04;
1506 case M_VGA_C90x43: case M_VGA_M90x43:
1507 set_width90(¶ms);
1510 case M_ENH_C80x43: case M_ENH_B80x43:
1511 params.regs[28] = 87;
1515 case M_VGA_C90x50: case M_VGA_M90x50:
1516 set_width90(¶ms);
1519 case M_VGA_C80x50: case M_VGA_M80x50:
1522 params.regs[19] = 7;
1526 case M_VGA_C90x25: case M_VGA_M90x25:
1527 set_width90(¶ms);
1530 case M_VGA_C40x25: case M_VGA_C80x25:
1532 case M_B40x25: case M_C40x25:
1533 case M_B80x25: case M_C80x25:
1534 case M_ENH_B40x25: case M_ENH_C40x25:
1535 case M_ENH_B80x25: case M_ENH_C80x25:
1536 case M_EGAMONO80x25:
1539 vga_load_state(adp, ¶ms);
1543 /* "unchain" the VGA mode */
1544 params.regs[5-1+0x04] &= 0xf7;
1545 params.regs[5-1+0x04] |= 0x04;
1546 /* turn off doubleword mode */
1547 params.regs[10+0x14] &= 0xbf;
1548 /* turn off word addressing */
1549 params.regs[10+0x17] |= 0x40;
1550 /* set logical screen width */
1551 params.regs[10+0x13] = 80;
1553 params.regs[10+0x11] = 0x2c;
1554 params.regs[10+0x06] = 0x0d;
1555 params.regs[10+0x07] = 0x3e;
1556 params.regs[10+0x10] = 0xea;
1557 params.regs[10+0x11] = 0xac;
1558 params.regs[10+0x12] = 0xdf;
1559 params.regs[10+0x15] = 0xe7;
1560 params.regs[10+0x16] = 0x06;
1561 /* set vertical sync polarity to reflect aspect ratio */
1562 params.regs[9] = 0xe3;
1565 case M_BG320: case M_CG320: case M_BG640:
1566 case M_CG320_D: case M_CG640_E:
1567 case M_CG640x350: case M_ENH_CG640:
1568 case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
1571 vga_load_state(adp, ¶ms);
1578 adp->va_mode = mode;
1579 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1580 update_adapter_info(adp, &info);
1582 /* move hardware cursor out of the way */
1583 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
1586 #else /* VGA_NO_MODE_CHANGE */
1588 #endif /* VGA_NO_MODE_CHANGE */
1591 #ifndef VGA_NO_FONT_LOADING
1594 set_font_mode(video_adapter_t *adp, u_char *buf)
1600 /* save register values */
1601 if (adp->va_type == KD_VGA) {
1602 outb(TSIDX, 0x02); buf[0] = inb(TSREG);
1603 outb(TSIDX, 0x04); buf[1] = inb(TSREG);
1604 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
1605 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
1606 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
1607 inb(adp->va_crtc_addr + 6);
1608 outb(ATC, 0x10); buf[5] = inb(ATC + 1);
1609 } else /* if (adp->va_type == KD_EGA) */ {
1611 * EGA cannot be read; copy parameters from the mode parameter
1614 mp = get_mode_param(adp->va_mode);
1615 buf[0] = mp[5 + 0x02 - 1];
1616 buf[1] = mp[5 + 0x04 - 1];
1617 buf[2] = mp[55 + 0x04];
1618 buf[3] = mp[55 + 0x05];
1619 buf[4] = mp[55 + 0x06];
1620 buf[5] = mp[35 + 0x10];
1623 /* setup vga for loading fonts */
1624 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1625 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
1626 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1627 outb(ATC, 0x20); /* enable palette */
1629 #if VGA_SLOW_IOACCESS
1630 #ifdef VGA_ALT_SEQACCESS
1631 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1633 outb(TSIDX, 0x02); outb(TSREG, 0x04);
1634 outb(TSIDX, 0x04); outb(TSREG, 0x07);
1635 #ifdef VGA_ALT_SEQACCESS
1636 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1638 outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
1639 outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
1640 outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
1641 #else /* VGA_SLOW_IOACCESS */
1642 #ifdef VGA_ALT_SEQACCESS
1643 outw(TSIDX, 0x0100);
1645 outw(TSIDX, 0x0402);
1646 outw(TSIDX, 0x0704);
1647 #ifdef VGA_ALT_SEQACCESS
1648 outw(TSIDX, 0x0300);
1650 outw(GDCIDX, 0x0204);
1651 outw(GDCIDX, 0x0005);
1652 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
1653 #endif /* VGA_SLOW_IOACCESS */
1659 set_normal_mode(video_adapter_t *adp, u_char *buf)
1663 /* setup vga for normal operation mode again */
1664 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1665 outb(ATC, 0x10); outb(ATC, buf[5]);
1666 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1667 outb(ATC, 0x20); /* enable palette */
1669 #if VGA_SLOW_IOACCESS
1670 #ifdef VGA_ALT_SEQACCESS
1671 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1673 outb(TSIDX, 0x02); outb(TSREG, buf[0]);
1674 outb(TSIDX, 0x04); outb(TSREG, buf[1]);
1675 #ifdef VGA_ALT_SEQACCESS
1676 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1678 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
1679 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
1680 if (adp->va_crtc_addr == MONO_CRTC) {
1681 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
1683 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
1685 #else /* VGA_SLOW_IOACCESS */
1686 #ifdef VGA_ALT_SEQACCESS
1687 outw(TSIDX, 0x0100);
1689 outw(TSIDX, 0x0002 | (buf[0] << 8));
1690 outw(TSIDX, 0x0004 | (buf[1] << 8));
1691 #ifdef VGA_ALT_SEQACCESS
1692 outw(TSIDX, 0x0300);
1694 outw(GDCIDX, 0x0004 | (buf[2] << 8));
1695 outw(GDCIDX, 0x0005 | (buf[3] << 8));
1696 if (adp->va_crtc_addr == MONO_CRTC)
1697 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
1699 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
1700 #endif /* VGA_SLOW_IOACCESS */
1705 #endif /* VGA_NO_FONT_LOADING */
1709 * Read the font data in the requested font page from the video adapter.
1714 vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1717 #ifndef VGA_NO_FONT_LOADING
1718 u_char buf[PARAM_BUFSIZE];
1721 #ifdef VGA_ALT_SEQACCESS
1725 prologue(adp, V_ADP_FONT, ENODEV);
1727 if (fontsize < 14) {
1730 } else if (fontsize >= 32) {
1732 } else if (fontsize >= 16) {
1740 if (page < 0 || page >= 8)
1742 segment = FONT_BUF + 0x4000*page;
1746 #ifdef VGA_ALT_SEQACCESS
1747 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1749 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1750 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1751 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1752 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1757 set_font_mode(adp, buf);
1758 if (fontsize == 32) {
1759 bcopy_fromio(segment + ch*32, data, fontsize*count);
1761 for (c = ch; count > 0; ++c, --count) {
1762 bcopy_fromio(segment + c*32, data, fontsize);
1766 set_normal_mode(adp, buf);
1768 #ifdef VGA_ALT_SEQACCESS
1769 if (adp->va_type == KD_VGA) {
1771 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1772 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1773 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1779 #else /* VGA_NO_FONT_LOADING */
1781 #endif /* VGA_NO_FONT_LOADING */
1786 * Set the font data in the requested font page.
1787 * NOTE: it appears that some recent video adapters do not support
1788 * the font page other than 0... XXX
1793 vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1796 #ifndef VGA_NO_FONT_LOADING
1797 u_char buf[PARAM_BUFSIZE];
1800 #ifdef VGA_ALT_SEQACCESS
1804 prologue(adp, V_ADP_FONT, ENODEV);
1806 if (fontsize < 14) {
1809 } else if (fontsize >= 32) {
1811 } else if (fontsize >= 16) {
1819 if (page < 0 || page >= 8)
1821 segment = FONT_BUF + 0x4000*page;
1825 #ifdef VGA_ALT_SEQACCESS
1826 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1828 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1829 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1830 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1831 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1836 set_font_mode(adp, buf);
1837 if (fontsize == 32) {
1838 bcopy_toio(data, segment + ch*32, fontsize*count);
1840 for (c = ch; count > 0; ++c, --count) {
1841 bcopy_toio(data, segment + c*32, fontsize);
1845 set_normal_mode(adp, buf);
1847 #ifdef VGA_ALT_SEQACCESS
1848 if (adp->va_type == KD_VGA) {
1850 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1851 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1852 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1858 #else /* VGA_NO_FONT_LOADING */
1860 #endif /* VGA_NO_FONT_LOADING */
1865 * Activate the requested font page.
1866 * NOTE: it appears that some recent video adapters do not support
1867 * the font page other than 0... XXX
1872 vga_show_font(video_adapter_t *adp, int page)
1874 #ifndef VGA_NO_FONT_LOADING
1875 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
1877 prologue(adp, V_ADP_FONT, ENODEV);
1878 if (page < 0 || page >= 8)
1882 outb(TSIDX, 0x03); outb(TSREG, cg[page]);
1886 #else /* VGA_NO_FONT_LOADING */
1888 #endif /* VGA_NO_FONT_LOADING */
1893 * Read DAC values. The values have expressed in 8 bits.
1898 vga_save_palette(video_adapter_t *adp, u_char *palette)
1902 prologue(adp, V_ADP_PALETTE, ENODEV);
1905 * We store 8 bit values in the palette buffer, while the standard
1906 * VGA has 6 bit DAC .
1908 outb(PALRADR, 0x00);
1909 for (i = 0; i < 256*3; ++i)
1910 palette[i] = inb(PALDATA) << 2;
1911 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1916 vga_save_palette2(video_adapter_t *adp, int base, int count,
1917 u_char *r, u_char *g, u_char *b)
1921 prologue(adp, V_ADP_PALETTE, ENODEV);
1923 outb(PALRADR, base);
1924 for (i = 0; i < count; ++i) {
1925 r[i] = inb(PALDATA) << 2;
1926 g[i] = inb(PALDATA) << 2;
1927 b[i] = inb(PALDATA) << 2;
1929 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1940 vga_load_palette(video_adapter_t *adp, const u_char *palette)
1944 prologue(adp, V_ADP_PALETTE, ENODEV);
1946 outb(PIXMASK, 0xff); /* no pixelmask */
1947 outb(PALWADR, 0x00);
1948 for (i = 0; i < 256*3; ++i)
1949 outb(PALDATA, palette[i] >> 2);
1950 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1951 outb(ATC, 0x20); /* enable palette */
1956 vga_load_palette2(video_adapter_t *adp, int base, int count,
1957 u_char *r, u_char *g, u_char *b)
1961 prologue(adp, V_ADP_PALETTE, ENODEV);
1963 outb(PIXMASK, 0xff); /* no pixelmask */
1964 outb(PALWADR, base);
1965 for (i = 0; i < count; ++i) {
1966 outb(PALDATA, r[i] >> 2);
1967 outb(PALDATA, g[i] >> 2);
1968 outb(PALDATA, b[i] >> 2);
1970 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1971 outb(ATC, 0x20); /* enable palette */
1977 * Change the border color.
1982 vga_set_border(video_adapter_t *adp, int color)
1984 prologue(adp, V_ADP_BORDER, ENODEV);
1986 switch (adp->va_type) {
1989 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1990 outb(ATC, 0x31); outb(ATC, color & 0xff);
1993 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */
2005 * Read video register values.
2006 * NOTE: this function only reads the standard EGA/VGA registers.
2007 * any extra/extended registers of SVGA adapters are not saved.
2012 vga_save_state(video_adapter_t *adp, void *p, size_t size)
2020 /* return the required buffer size */
2021 prologue(adp, V_ADP_STATESAVE, 0);
2022 return sizeof(adp_state_t);
2024 prologue(adp, V_ADP_STATESAVE, ENODEV);
2025 if (size < sizeof(adp_state_t))
2029 ((adp_state_t *)p)->sig = V_STATE_SIG;
2030 buf = ((adp_state_t *)p)->regs;
2031 bzero(buf, V_MODE_PARAM_SIZE);
2032 crtc_addr = adp->va_crtc_addr;
2036 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2037 for (i = 0, j = 5; i < 4; i++) {
2039 buf[j++] = inb(TSREG);
2041 buf[9] = inb(MISC + 10); /* dot-clock */
2042 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2044 for (i = 0, j = 10; i < 25; i++) { /* crtc */
2046 buf[j++] = inb(crtc_addr + 1);
2048 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
2049 inb(crtc_addr + 6); /* reset flip-flop */
2051 buf[j++] = inb(ATC + 1);
2053 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
2055 buf[j++] = inb(GDCREG);
2057 inb(crtc_addr + 6); /* reset flip-flop */
2058 outb(ATC, 0x20); /* enable palette */
2063 if (vga_get_info(adp, adp->va_mode, &info) == 0) {
2064 if (info.vi_flags & V_INFO_GRAPHICS) {
2065 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
2066 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
2068 buf[0] = info.vi_width; /* COLS */
2069 buf[1] = info.vi_height - 1; /* ROWS */
2071 buf[2] = info.vi_cheight; /* POINTS */
2073 /* XXX: shouldn't be happening... */
2074 kprintf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
2075 adp->va_unit, adp->va_name);
2078 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
2079 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
2080 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
2081 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
2082 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
2090 * Set video registers at once.
2091 * NOTE: this function only updates the standard EGA/VGA registers.
2092 * any extra/extended registers of SVGA adapters are not changed.
2097 vga_load_state(video_adapter_t *adp, void *p)
2103 prologue(adp, V_ADP_STATELOAD, ENODEV);
2104 if (((adp_state_t *)p)->sig != V_STATE_SIG)
2107 buf = ((adp_state_t *)p)->regs;
2108 crtc_addr = adp->va_crtc_addr;
2111 dump_buffer(buf, V_MODE_PARAM_SIZE);
2116 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2117 for (i = 0; i < 4; ++i) { /* program sequencer */
2119 outb(TSREG, buf[i + 5]);
2121 outb(MISC, buf[9]); /* set dot-clock */
2122 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2123 outb(crtc_addr, 0x11);
2124 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
2125 for (i = 0; i < 25; ++i) { /* program crtc */
2127 outb(crtc_addr + 1, buf[i + 10]);
2129 inb(crtc_addr+6); /* reset flip-flop */
2130 for (i = 0; i < 20; ++i) { /* program attribute ctrl */
2132 outb(ATC, buf[i + 35]);
2134 for (i = 0; i < 9; ++i) { /* program graph data ctrl */
2136 outb(GDCREG, buf[i + 55]);
2138 inb(crtc_addr + 6); /* reset flip-flop */
2139 outb(ATC, 0x20); /* enable palette */
2141 #if notyet /* a temporary workaround for kernel panic, XXX */
2143 if (adp->va_unit == V_ADP_PRIMARY) {
2144 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
2145 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
2146 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
2148 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
2149 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
2152 #endif /* VGA_NO_BIOS */
2161 * Change the origin (window mapping) of the banked frame buffer.
2164 vga_set_origin(video_adapter_t *adp, off_t offset)
2167 * The standard video modes do not require window mapping;
2168 * always return error.
2175 * Read the position of the hardware text cursor.
2180 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
2187 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2191 outb(adp->va_crtc_addr, 14);
2192 off = inb(adp->va_crtc_addr + 1);
2193 outb(adp->va_crtc_addr, 15);
2194 off = (off << 8) | inb(adp->va_crtc_addr + 1);
2197 *row = off / adp->va_info.vi_width;
2198 *col = off % adp->va_info.vi_width;
2205 * Move the hardware text cursor. If col and row are both -1,
2206 * the cursor won't be shown.
2211 vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
2218 if ((col == -1) && (row == -1)) {
2221 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2223 off = row*adp->va_info.vi_width + col;
2227 outb(adp->va_crtc_addr, 14);
2228 outb(adp->va_crtc_addr + 1, off >> 8);
2229 outb(adp->va_crtc_addr, 15);
2230 outb(adp->va_crtc_addr + 1, off & 0x00ff);
2237 * set_hw_cursor_shape():
2238 * Change the shape of the hardware text cursor. If the height is
2239 * zero or negative, the cursor won't be shown.
2244 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
2245 int celsize, int blink)
2251 switch (adp->va_type) {
2258 /* make the cursor invisible */
2259 outb(adp->va_crtc_addr, 10);
2260 outb(adp->va_crtc_addr + 1, 32);
2261 outb(adp->va_crtc_addr, 11);
2262 outb(adp->va_crtc_addr + 1, 0);
2264 outb(adp->va_crtc_addr, 10);
2265 outb(adp->va_crtc_addr + 1, celsize - base - height);
2266 outb(adp->va_crtc_addr, 11);
2267 outb(adp->va_crtc_addr + 1, celsize - base - 1);
2272 /* make the cursor invisible */
2273 outb(adp->va_crtc_addr, 10);
2274 outb(adp->va_crtc_addr + 1, celsize);
2275 outb(adp->va_crtc_addr, 11);
2276 outb(adp->va_crtc_addr + 1, 0);
2278 outb(adp->va_crtc_addr, 10);
2279 outb(adp->va_crtc_addr + 1, celsize - base - height);
2280 outb(adp->va_crtc_addr, 11);
2281 outb(adp->va_crtc_addr + 1, celsize - base);
2292 * Put the display in power save/power off mode.
2297 vga_blank_display(video_adapter_t *adp, int mode)
2302 switch (adp->va_type) {
2305 case V_DISPLAY_SUSPEND:
2306 case V_DISPLAY_STAND_BY:
2310 outb(TSREG, val | 0x20);
2311 outb(adp->va_crtc_addr, 0x17);
2312 val = inb(adp->va_crtc_addr + 1);
2313 outb(adp->va_crtc_addr + 1, val & ~0x80);
2315 case V_DISPLAY_BLANK:
2319 outb(TSREG, val | 0x20);
2325 outb(TSREG, val & 0xDF);
2326 outb(adp->va_crtc_addr, 0x17);
2327 val = inb(adp->va_crtc_addr + 1);
2328 outb(adp->va_crtc_addr + 1, val | 0x80);
2334 /* no support yet */
2340 case V_DISPLAY_SUSPEND:
2341 case V_DISPLAY_STAND_BY:
2342 case V_DISPLAY_BLANK:
2343 outb(adp->va_crtc_addr + 4, 0x25);
2346 outb(adp->va_crtc_addr + 4, 0x2d);
2354 case V_DISPLAY_SUSPEND:
2355 case V_DISPLAY_STAND_BY:
2356 case V_DISPLAY_BLANK:
2357 outb(adp->va_crtc_addr + 4, 0x21);
2360 outb(adp->va_crtc_addr + 4, 0x29);
2374 * Mmap frame buffer.
2379 vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
2381 if (adp->va_info.vi_flags & V_INFO_LINEAR)
2385 kprintf("vga_mmap_buf(): window:0x%x, offset:0x%x\n",
2386 adp->va_info.vi_window, offset);
2389 /* XXX: is this correct? */
2390 if (offset > adp->va_window_size - PAGE_SIZE)
2394 return i386_btop(adp->va_info.vi_window + offset);
2398 #ifndef VGA_NO_MODE_CHANGE
2401 planar_fill(video_adapter_t *adp, int val)
2404 int at; /* position in the frame buffer */
2407 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2408 outw(GDCIDX, 0x0003); /* data rotate/function select */
2409 outw(GDCIDX, 0x0f01); /* set/reset enable */
2410 outw(GDCIDX, 0xff08); /* bit mask */
2411 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2413 length = adp->va_line_width*adp->va_info.vi_height;
2414 while (length > 0) {
2415 l = imin(length, adp->va_window_size);
2416 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2417 bzero_io(adp->va_window, l);
2421 outw(GDCIDX, 0x0000); /* set/reset */
2422 outw(GDCIDX, 0x0001); /* set/reset enable */
2426 packed_fill(video_adapter_t *adp, int val)
2429 int at; /* position in the frame buffer */
2433 length = adp->va_line_width*adp->va_info.vi_height;
2434 while (length > 0) {
2435 l = imin(length, adp->va_window_size);
2436 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2437 fill_io(val, adp->va_window, l);
2444 direct_fill(video_adapter_t *adp, int val)
2447 int at; /* position in the frame buffer */
2451 length = adp->va_line_width*adp->va_info.vi_height;
2452 while (length > 0) {
2453 l = imin(length, adp->va_window_size);
2454 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2455 switch (adp->va_info.vi_pixel_size) {
2456 case sizeof(u_int16_t):
2457 fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
2462 case sizeof(u_int32_t):
2463 filll_io(val, adp->va_window, l/sizeof(u_int32_t));
2472 vga_clear(video_adapter_t *adp)
2474 switch (adp->va_info.vi_mem_model) {
2475 case V_INFO_MM_TEXT:
2476 /* do nothing? XXX */
2478 case V_INFO_MM_PLANAR:
2479 planar_fill(adp, 0);
2481 case V_INFO_MM_PACKED:
2482 packed_fill(adp, 0);
2484 case V_INFO_MM_DIRECT:
2485 direct_fill(adp, 0);
2493 planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2498 int offset; /* offset within window */
2502 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2503 outw(GDCIDX, 0x0003); /* data rotate/function select */
2504 outw(GDCIDX, 0x0f01); /* set/reset enable */
2505 outw(GDCIDX, 0xff08); /* bit mask */
2506 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2508 banksize = adp->va_window_size;
2511 pos = adp->va_line_width*y + x/8;
2512 if (bank != pos/banksize) {
2513 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2514 bank = pos/banksize;
2516 offset = pos%banksize;
2517 bx = (x + cx)/8 - x/8;
2519 outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08);
2520 writeb(adp->va_window + offset, 0);
2523 if (offset >= banksize) {
2525 ++bank; /* next bank */
2526 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2528 outw(GDCIDX, 0xff08); /* bit mask */
2531 l = imin(bx, banksize);
2532 bzero_io(adp->va_window + offset, l);
2535 if (offset >= banksize) {
2537 ++bank; /* next bank */
2538 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2542 outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08);
2543 writeb(adp->va_window + offset, 0);
2545 if (offset >= banksize) {
2547 ++bank; /* next bank */
2548 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2550 outw(GDCIDX, 0xff08); /* bit mask */
2556 outw(GDCIDX, 0xff08); /* bit mask */
2557 outw(GDCIDX, 0x0000); /* set/reset */
2558 outw(GDCIDX, 0x0001); /* set/reset enable */
2562 packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2567 int offset; /* offset within window */
2570 banksize = adp->va_window_size;
2572 cx *= adp->va_info.vi_pixel_size;
2574 pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size;
2575 if (bank != pos/banksize) {
2576 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2577 bank = pos/banksize;
2579 offset = pos%banksize;
2580 end = imin(offset + cx, banksize);
2581 fill_io(val, adp->va_window + offset,
2582 (end - offset)/adp->va_info.vi_pixel_size);
2583 /* the line may cross the window boundary */
2584 if (offset + cx > banksize) {
2585 ++bank; /* next bank */
2586 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2587 end = offset + cx - banksize;
2588 fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size);
2596 direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2601 int offset; /* offset within window */
2605 * XXX: the function assumes that banksize is a muliple of
2606 * sizeof(u_int16_t).
2608 banksize = adp->va_window_size;
2610 cx *= sizeof(u_int16_t);
2612 pos = adp->va_line_width*y + x*sizeof(u_int16_t);
2613 if (bank != pos/banksize) {
2614 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2615 bank = pos/banksize;
2617 offset = pos%banksize;
2618 end = imin(offset + cx, banksize);
2619 fillw_io(val, adp->va_window + offset,
2620 (end - offset)/sizeof(u_int16_t));
2621 /* the line may cross the window boundary */
2622 if (offset + cx > banksize) {
2623 ++bank; /* next bank */
2624 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2625 end = offset + cx - banksize;
2626 fillw_io(val, adp->va_window, end/sizeof(u_int16_t));
2634 direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2639 int offset; /* offset within window */
2645 b[0] = val & 0x0000ff;
2646 b[1] = (val >> 8) & 0x0000ff;
2647 b[2] = (val >> 16) & 0x0000ff;
2648 banksize = adp->va_window_size;
2652 pos = adp->va_line_width*y + x*3;
2653 if (bank != pos/banksize) {
2654 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2655 bank = pos/banksize;
2657 offset = pos%banksize;
2658 end = imin(offset + cx, banksize);
2659 for (i = 0, j = offset; j < end; i = (++i)%3, ++j) {
2660 writeb(adp->va_window + j, b[i]);
2662 /* the line may cross the window boundary */
2663 if (offset + cx >= banksize) {
2664 ++bank; /* next bank */
2665 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2667 end = offset + cx - banksize;
2668 for (; j < end; i = (++i)%3, ++j) {
2669 writeb(adp->va_window + j, b[i]);
2678 direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2683 int offset; /* offset within window */
2687 * XXX: the function assumes that banksize is a muliple of
2688 * sizeof(u_int32_t).
2690 banksize = adp->va_window_size;
2692 cx *= sizeof(u_int32_t);
2694 pos = adp->va_line_width*y + x*sizeof(u_int32_t);
2695 if (bank != pos/banksize) {
2696 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2697 bank = pos/banksize;
2699 offset = pos%banksize;
2700 end = imin(offset + cx, banksize);
2701 filll_io(val, adp->va_window + offset,
2702 (end - offset)/sizeof(u_int32_t));
2703 /* the line may cross the window boundary */
2704 if (offset + cx > banksize) {
2705 ++bank; /* next bank */
2706 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2707 end = offset + cx - banksize;
2708 filll_io(val, adp->va_window, end/sizeof(u_int32_t));
2716 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2718 switch (adp->va_info.vi_mem_model) {
2719 case V_INFO_MM_TEXT:
2720 /* do nothing? XXX */
2722 case V_INFO_MM_PLANAR:
2723 planar_fill_rect(adp, val, x, y, cx, cy);
2725 case V_INFO_MM_PACKED:
2726 packed_fill_rect(adp, val, x, y, cx, cy);
2728 case V_INFO_MM_DIRECT:
2729 switch (adp->va_info.vi_pixel_size) {
2730 case sizeof(u_int16_t):
2731 direct_fill_rect16(adp, val, x, y, cx, cy);
2734 direct_fill_rect24(adp, val, x, y, cx, cy);
2736 case sizeof(u_int32_t):
2737 direct_fill_rect32(adp, val, x, y, cx, cy);
2746 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2753 vga_bitblt(video_adapter_t *adp,...)
2759 #endif /* !VGA_NO_MODE_CHANGE */
2762 get_palette(video_adapter_t *adp, int base, int count,
2763 u_char *red, u_char *green, u_char *blue, u_char *trans)
2769 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2773 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
2776 if (vga_save_palette2(adp, base, count, r, g, b)) {
2780 copyout(r, red, count);
2781 copyout(g, green, count);
2782 copyout(b, blue, count);
2783 if (trans != NULL) {
2785 copyout(r, trans, count);
2793 set_palette(video_adapter_t *adp, int base, int count,
2794 u_char *red, u_char *green, u_char *blue, u_char *trans)
2801 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2805 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
2808 err = copyin(red, r, count);
2810 err = copyin(green, g, count);
2812 err = copyin(blue, b, count);
2814 err = vga_load_palette2(adp, base, count, r, g, b);
2817 return (err ? ENODEV : 0);
2821 vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
2824 case FBIO_GETWINORG: /* get frame buffer window origin */
2828 case FBIO_SETWINORG: /* set frame buffer window origin */
2831 case FBIO_SETDISPSTART: /* set display start address */
2832 return (set_display_start(adp,
2833 ((video_display_start_t *)arg)->x,
2834 ((video_display_start_t *)arg)->y)
2837 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
2838 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
2840 case FBIO_GETPALETTE: /* get color palette */
2841 return get_palette(adp, ((video_color_palette_t *)arg)->index,
2842 ((video_color_palette_t *)arg)->count,
2843 ((video_color_palette_t *)arg)->red,
2844 ((video_color_palette_t *)arg)->green,
2845 ((video_color_palette_t *)arg)->blue,
2846 ((video_color_palette_t *)arg)->transparent);
2848 case FBIO_SETPALETTE: /* set color palette */
2849 return set_palette(adp, ((video_color_palette_t *)arg)->index,
2850 ((video_color_palette_t *)arg)->count,
2851 ((video_color_palette_t *)arg)->red,
2852 ((video_color_palette_t *)arg)->green,
2853 ((video_color_palette_t *)arg)->blue,
2854 ((video_color_palette_t *)arg)->transparent);
2856 case FBIOGTYPE: /* get frame buffer type info. */
2857 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
2858 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
2859 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
2860 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
2861 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
2862 ((struct fbtype *)arg)->fb_cmsize = 0;
2864 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
2865 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
2868 case FBIOGETCMAP: /* get color palette */
2869 return get_palette(adp, ((struct fbcmap *)arg)->index,
2870 ((struct fbcmap *)arg)->count,
2871 ((struct fbcmap *)arg)->red,
2872 ((struct fbcmap *)arg)->green,
2873 ((struct fbcmap *)arg)->blue, NULL);
2875 case FBIOPUTCMAP: /* set color palette */
2876 return set_palette(adp, ((struct fbcmap *)arg)->index,
2877 ((struct fbcmap *)arg)->count,
2878 ((struct fbcmap *)arg)->red,
2879 ((struct fbcmap *)arg)->green,
2880 ((struct fbcmap *)arg)->blue, NULL);
2883 return fb_commonioctl(adp, cmd, arg);
2888 dump_buffer(u_char *buf, size_t len)
2892 for(i = 0; i < len;) {
2893 kprintf("%02x ", buf[i]);
2894 if ((++i % 16) == 0)
2901 * Print some information about the video adapter and video modes,
2902 * with requested level of details.
2907 vga_diag(video_adapter_t *adp, int level)
2920 kprintf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n",
2921 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488)));
2922 kprintf("vga: CRTC:0x%x, video option:0x%02x, ",
2923 readw(BIOS_PADDRTOVADDR(0x463)),
2924 readb(BIOS_PADDRTOVADDR(0x487)));
2925 kprintf("rows:%d, cols:%d, font height:%d\n",
2926 readb(BIOS_PADDRTOVADDR(0x44a)),
2927 readb(BIOS_PADDRTOVADDR(0x484)) + 1,
2928 readb(BIOS_PADDRTOVADDR(0x485)));
2929 #endif /* VGA_NO_BIOS */
2930 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
2931 kprintf("vga: param table EGA/VGA:%p", video_mode_ptr);
2932 kprintf(", CGA/MDA:%p\n", video_mode_ptr2);
2933 kprintf("vga: rows_offset:%d\n", rows_offset);
2935 #endif /* FB_DEBUG > 1 */
2937 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
2940 if (adp->va_flags & V_ADP_MODECHANGE) {
2941 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
2942 if (bios_vmode[i].vi_mode == NA)
2944 if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
2946 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
2949 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
2950 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
2952 #endif /* FB_DEBUG > 1 */
2954 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA))
2956 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
2957 if (video_mode_ptr == NULL)
2958 kprintf("vga%d: %s: WARNING: video mode switching is not "
2959 "fully supported on this adapter\n",
2960 adp->va_unit, adp->va_name);
2965 if (adp->va_type == KD_VGA) {
2966 kprintf("VGA parameters upon power-up\n");
2967 dump_buffer(adpstate.regs, sizeof(adpstate.regs));
2968 kprintf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
2969 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
2972 mp = get_mode_param(adp->va_initial_mode);
2973 if (mp == NULL) /* this shouldn't be happening */
2975 kprintf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode);
2976 dump_buffer(mp, V_MODE_PARAM_SIZE);